I wouldn't worry if I was you. If he calls again, tell him that if he contacts you about this nonsense again, you'll report HIM to the police for harassment. Remind him that it's you and your buddy against him as witnesses, AND he was in the car and said nothing at the time. There is absolutely no way you'll be held accountable.

there is no law against reporting vandalism. him and his buddy are witnesses? how about the 10+ people working the respective in the department at the dealership, never mind the supplier. i'd rather call a lawyer